Metal-reducing machine.



B. M. W. HANSON.

METAL REDUCING MACHINE.

APPLICATION man OCT-2|.1915.

PatentedJune 20, 1916.

2 SHEETSSHEET I.

JUVENILE? WI'W'IEEE E A WWW B .'1V. w. HANSON. METAL REDUCING IVIACHUVE.

' v APPLICATION FILED OCT- 2!,1915- LMEKKYQQ Patentedlune 20, 1916.

2 SHEETS-SHEET 2- BEETGT Ili. W. HANSON, m5 HARTFORD, CONNECTICUT, ASSIGNGR "1'0 PRATT din WHXTNEY COMPANY, OF HARTFORD, CQNN-ECTICU'E, A. CGBPUEATEXOIET UF NZEW' JERSEY.

mnrennnoocmsessentials.

Specification of Letters Petent.

rseemee eoreie,

Application filed october sit-{1912s. semen. some.

To all whom it may concern:

lle it known that l, BENoT M. W. l'lAN-' son, a citizen ofthe United States, residing at Hartford, 1n the county of Hartford and State of Gonnecticut, have invented certain new and useful Improvements in Metshlfie clucing Machines, of which the following is s specification.

This inventlon rel ates to metal-reducing machines.

While my improvements are susceptihleof i might mention whet is known as a spott ng: machine I provide it construction i the tool and the Work can he sno incl s'oli lly supported and Wheres i in the organization comprises e minimum number of joints, thus insuring SlHIPllflC-ntion without in any Wise oil'ecting the efficiency or accuracy of the machine,

' The foregoing is e, brief outline of some of the principal objects ettainenl,

Others will he brought out in the follow description wherein I will set forth in (letsilthst particular form of embodiment of the invention which l have selected i l t wcion in "the drawings accompanying and lo ning part of the present specificstio showing is provided to enable t ,llecl 1n the art to practice the inventtion. ll clo not limit myself thereto, hut rosy therefrom in several respects Within the scope of the invention (lefinccl by the claims following sairl description. .o

Referring to said drawings: "Figure 1 is a front elevation of o xnschine involving my invention. 2 is en enrl elevation of he same :is seen l'rom the right in 3 is a transverse section on the line 3-3 of Fig. looking in the direction of the em row. Fig, lis a detail View illustrative of e ieecl nut-end a fcec screw. Fig. 5 is s like 'YlQW showing a portion oi an adjusting wheel 21ml '1' scale anal pointer user-ole in conjunction therewith. Fig. 6 is e cross section on the line .-fi of Fig; 2, v Like chsrscters refer throughout the several views, lfiiggs.

to like pert-s 3 one which in the present case is s grincling; Wheel, and the other of which sustsinsithe "work. The beset orloeol Qsn'swers sstielleo torily es a carrier for the tool, While the corrier3 upholclsthe Work of Wll*2tl7(:lV@I"I1filtl1lP it may he. "lJl hen as in the oonstroction shown the machine is adept-color spot ting as it is known, the Worlr will. gener all but not necessarily he of cylindrical storm, tor example smile or e herrel. lhe tool such as the grinding Wheel 1* is'not only heavy but is siihjected to some rilirzrtion, and by constituting; the loose or hell 2 scale larger thanthe other fig,

The machine comprises maker-up? two carriers, one of which the tool till a carrier for the wheels, the letter will snstoine l in a suhstontisl, nisnner end Vill' rip by the hesv' i hecl. This grinding; wheel i fastened; in some suitable msnner to the shsft 5, the hose or bed. 2 having on its top hearings torsostaining the shaft in questron. Extending transverselyotthc lose, 2

ion ellectuelly received snail token near the rear thereof is the resin shell; 6'

ziclsptecl to be rotated in any desirable me nor. For instance, sand, shalt might he equipped with pulley 7 connected by helt 8 with s drum or pulley on an overheorl or conntershsft (not shown), The shell; (5 therefore, the grinding wheel t ere preferably, although not imperatirely, continu ously rotetive.

'l he carrier 3 for the work is mounted; for movement shoot an ,airis', being oeptcd as shown for swinging'movement While the tool is upon a stationary carrier sncl the work upon a movable cerrienthis may not in all csses be necessary, although it is elesirsble, an advantage having alrescly been stated for the mounting of the grinding wheel upon the base or bed The carrier 3 as shown is in the form of a yoke, the width of the body of which slightly exceeds the length of the base or heel 2. The branches of the yohelike carrier 3 in the construction shown straclille the lower front portion of the lease or bed and through them the stationary shaft 9 freely extends, 'ssicl Illltl A w) VVW of importance. Owing to thebelt drive I can swing the carrier 3 inward'o'r outward without in any manner affecting the driving connections.

The upper portion of the carrier 3 is shown provided with a head stock 10 and a tail. stock 11 adjustable longitudinally of said upper portion in slideways such as are common in metal working machines of various kinds. The head stocklO is provided with a fixed center 12 while the tail stock 11' is equipped with a practically similar center 13 between which the work is mounted.

Although the work is preferably rotated it does not in the construction shown, receive its motion from either of the centers 12 or 13, both of which as noted being fixed or stationary. Extending longitudinally of the upper portion of the carrier 3 is a shaft 14: provided with a pinion 15 fastened thereto in some suitable manner for sliding movement thereon. The pinion 15 is in mesh with the spur gear 16 in the headstock 10, said spur gear 16 being equipped with an outwardly extending stud or projection 17 to which a so-called lathe dog can be connected to turn the work mounted between the centers 12 and 13. The outer end of the shaft 14 is equipped with tight and loose pulleys 18 and 19 to receive the belt 20 connected with the small and wide-faced step of the cone pulley 22 loose on the shaft 9 about which it will be remembered the carrier 3 turns. If the belt 20 be on the pulley 18 and if the pulley 22 be turned, it follows that the shaft 1 1 will be turned as will also through the intermediate parts, the spur gear 16 to effect the revolution of the stud 17, and if work be mounted between the centers 12 and 13 and if a latch dog be 00- operatively interposed between the projections 17 and the work, the latter will be rotated. Rotation of the work can be stopped by moving the belt 20 from the tight pulley 18 to the loose pulley 19. Around the large step of the cone-pulley 22 is a crossed belt 23 which also passes around the pulley 24 on the main shaft 6 which provides a simple way of rotating said cone pulley from said main shaft. It follows as a consequence that if the shaft 6 be rotated and if the belt 20 been the pulley 18 as explained and if the Work be connected with the spur gear 16 in the manner already noted, the work will in such case be turned.

The work carrier 3 is provided with a' ing movements.

steady-rest denoted in a general way by 25 and made the subject matterof a contemporaneously pending application filed October 21, 1915, Serial N 0. 57,101. The pulleys- 18 and 19 may as shown he incased bythe housing 26 on the carrier 3 while the bed may be furnished with a housing 27 to re ceive and protect the belt 23, the pulley 24: and the cone pulley 22.

Any suitable means may be provided for giving to the carrier advancing and'retract- For this purpose'I provide a feed nut and cooperating screw, the carrier 3 in the present instance being provided with the screw while the nut is upon'the base or bed 2. A feed screw such as meets the desired conditions is that denoted by 28,- the cooperating nut being designated by 29, the base or bedbeing chambered as at 30 to receive the'nut and forward portion of the feed screw Opposite sides of the chamber 30 are equipped with coaxial pins 31 adapted to enter sockets in the opposite sides of the nut 29 from which as will be inferred, said nut is mounted for tilting movement, so that it can automatically compensate itself for the various angular positions of the carrier 3. 1 The body portion of the carrier 3 has a chamber or cavity 33 to receive a hearing as 34 for the shaft 28, said bearing 34 as shown consisting of a collar through which the plain portion of the screw 28 freely extends, opposite sides of the hearing or collar 34 having sockets. to receive the plain inner ends of the coaxial pivot screws The collar 34 is also tiltable so that it can accommodate itself automatically to the different angular positions of the carrier 3. It will be clear that the nut 29 is immovable in the direction of the axis of rotation of the screw 28.

It will, therefore, be obvious that if the screw 28 be turned in one direction the carrier 3 will be advanced, whereas on opposite rotation of the screw retraction of the carrier will follow. In the present case the screw is turned to the right to advance the carrier and the left :to retract it. To thus operate the screw any suitable means may be provided, the hand wheel 36 being shown for the purpose. In conjunction with the hand wheel is a suitable gage, one form of which will be hereinafter more particularly described. The base is shown provided with a spring actuated plunger 37, the push spring 38 of which and the plunger itself being in a socket in the base or bed. The operative or outer end of the plunger applies a constant effect to the carrier 3 to take up backlash and to prevent chattering.

In operation the work is mounted upon the carrier when the latter is in its retracted position and when the work is positioned it and the wheel 4 will be rotated and the wheel 36 will be manipulated to effect the '36 is turned in so, which fact will be scale 39. PIOVISIOIII is made for shp of the,

' eral movement of advance of the carrier to move the work against the surface of the wheel, the our rier being fedinward as the reducing ation progresses and until the work is reduced to the desired extent.

Fastened to the periphery of the hand wheel 36 is the gage or scale 39 with which the pointer or finger 40 is cooperative, the shank d1 of said pointer or finger having a clamp 42 and. a counterweight s3. The clamp 42 is adapted to surround and to frictionally embrace the hub of said hand wheel. lhe counterweight 43 tends to normally maintain the shank or body portion ell in an approximately vertical position. The pointer 41 .in addition to coijperating with the scale or gage 39 also 00 operates with the stop 4-4 pivoted to the bracket 4&5 on the base or bed 2. This stop Mvis normally in the path of the lug or projection s? on the pointer 40 and when the lugstrikes the stop as the hand wheel feeding the carrier 3 inward, this indicates that the work has been reduced to the correct size or approxiu'iately indicated by the pointer 40. As I state the pointer 40 is arrested by the stop 44 when the work has been reduced or practically so, to the requisite size. When the pointer does strike the stop, this will apprise thefoperator of the fact noted. He can measure his work, and if itis not exactly reduced, he can advance the carrier 3 farther inward through the primary agency of the hand wheel 36 in the manner indicated, and during this motion the shank or body portion 41 wil slip on the hub of the hand wheel. Said shank or body portion 41 is provided with the wedge shaped part L6 generally integral therewith and which when the wheel 36 is reversely operated as shown by the arrow and dotted lines in Fig. 5 will strike and lift the stop 44 as illustrated by dotted lines in Fig. 2.

To shift the belt 20 a shifter such denoted in a vided. I

As already noted the work carrier in the organization illustrated is forked at its lower end to straddle the bed 2, the consequence being that the lower portion of the bed constitutes a means for preventing latthe work carrier or movement thereof in the direction of the axis of rotation of the work which is an-impor taut feature when the machine is adapted for spotting, an operation which is of a pre-v cise'character. The pivoting of the-work carrier to the lower portion of the base is also a feature of some importance when it 's considered that the work is supported by i er portion of the carrier and that as that general way by 20 may be prooperforked and straddling tea. is sustained by the upper-portion swinging movement, spindles on the work carrier for supporting the work, meansindcpendent of the, spindles for rotating the work, and means for advancing the work.

carrier.

prising a bed, by the bed, a nected with the lower portion of the bed for swinging movement, spindles on the work carrier above its point of support, for rea grinding wheel supported ceiving between them the work, and a steady rest connected with the work carrier be tween said spindles, for engaging the work between the spindles, means for advancing said carrier, and means for rotating the x f work.

3. A machine of the class described comprising a bed, a grinding wheel on the bed, a. work carrier pivotally connected with the bedfor swinging movement, spindles on the work carrier for supporting the work, means independent of the spindles for rotating the work, manually operable means for advancing the work carrier, and means for posi-: tively preventing movement of the work carrier in the direction of the axis of rotation of the work.

' 4. A machine of the class described c0mprisinga tool carrier, aswinging work carrier, a'belt driven element coaxial with the work carrier, a belt driven elcmenton the work carrier coiiperative with the other belt driven element, work rotating means actuated by said second belt driven element, and a nut and a feed screw device, for advancing the workcarrier, one of the elements of said nut and feed'screw device having a swinging connection with the work carrier and the other having a swinging connection with,

the frame of the machine.

5. A machine of the class described comprising a bed, means for rotatively supporting a grinding tool on the bed, a swinging workcarrier, a belt driven element coaxial with the work carrier, a belt driven element on the work carrier cooperative with the other belt driven element, work rotating means actuated by said'second belt driven element, and means for advancing the WOI'k carrier. 5

6. A machine of the class described comprising a bed, means on the bed for rota: tively supporting a tool, provided with work supporting means, the bed, a pulley on the bed coaxial. with. the carri and Pulley 2. A machine of the class described comwork carrier plvotally cona swinging carrier on the carrier, provided with means for rotating the Work and cooperative with the other pulley.

7. A machine of the class described comprising a carrier, means including a wheel. for mov ng said carrier, a gage disposed circumferentially of the wheel, a pointer cooperative with the gage and having a slip connection with the wheel, and a stop sup porting independently of the whe l and in the path of the pointer.

8. A machine of the class described comprising a tool carrier and a work carrier, the latter being pivotally connected with the former for swinging movement, manually operable means for advancing the work carrier, and means for positively indicating to the operator of the machine, when said work carrier has advanced a certain distance.-

9. A machine of the class described comprising a bed provided withmeans for rotatively supporting a grinding wheel, a carrier having a pivotal connection with the bed and provided with means for rotating the work, manually operable means for advancmeans for rotatively supporting the work, a

manually operable element provided with means for advancing said carrier, a manually settable element connected with said manually operable member by a slip connection, and a fixed device to be engaged by said manually settable element on a predetermined motion of the manually operable member.- a

In testimony whereofI afiii; my signature in presence of two witnesses.

BENGT MI W. HANSON.

Witnesses:

' W. M. Sromzs,

C. M. GELLERT. 

